IF Formula Closing Bracket is a issue for me

=round(if(((today()-e3)/365)<60,if(bb3<=250000,0,if(bb3<=500000,((bb3-250000)*5%),if(bb3<=750000,((bb3-500000)*10%+12500),if(bb3<=1000000,((bb3-750000)*20%+37500),if(bb3<=1250000,((bb3-1000000)*25%+75000),if(bb3<=1500000,((bb3-1250000)*30%+125000),((bb3-1500000)*30%+187500)))))),0),if(((today()-e3)/365)>80,if(bb3<=500000,0,if(bb3<=750000,((bb3-500000)*10%),if(bb3<=1000000,((bb3-750000)*15%+25000),if(bb3<=1250000,((bb3-1000000)*20%+62500),if(bb3<=1500000,((bb3-1250000)*25%+112500),((bb3-1500000)*30%)+175000)),if(bb3<=300000,0,if(bb3<=500000,((bb3-300000)*5%),if(bb3<=750000,((bb3-500000)*10%+10000),if(bb3<=1000000,((bb3-750000)*15%+35000),if(bb3<=1250000,((bb3-1000000)*20%+72500),if(bb3<=1500000,((bb3-1250000)*25%+122500),((bb3-1500000)*30%+185000))))),0)

I try to apply the multiple if condition to calculate the tax where in its say the error as "Your formula is missing a parenthesis--) or (.check the formula,and than add the parenthesis in the appropriate place"
Please guide me what needful can be done - BB3 cell is Total Taxable value from that this formula should apply.

This looks like a variable rates problem
Much simpler like this http://www.mcgimpsey.com/excel/variablerate1.html

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https://chandoo.org/forum/threads/if...-for-me.44142/

I understand your frustration JeteMC.
FWIW you can always add the OP to your "Ignore list"?
Thanks for your hard work